XRISM XTEND observation 201121010

Title

A MAGNETICALLY-DRIVEN WIND FROM AN ACCRETING MILLISECOND PULSAR?

Abstract

IGR J17062-6143 habors a neutron star that spins at 163~Hz and is in a 38-min orbit with a hydrogen-deficient companion star. Previous Chandra/HETG and XMM-Newton/RGS observations revealed hints of blue-shifted spectral lines at <2 keV energies that could indicate the presence of an outflowing wind. Since the commonly inferred thermal wind-launch mechanism cannot operate in such a very compact binary, the putative wind may be launched by magnetic processes. XRISM can reveal if a wind is indeed present by now allowing to search for narrow lines from a wind in the 6-7 keV Fe-K band. If confirmed, it would be the first undisputed detection of a magnetic wind in an X-ray binary and would have broad astrophysical implications.

FITS header

TELESCOP= 'XRISM   '           / Mission name
INSTRUME= 'XTEND   '           / Instrument name
OBS_ID  = '201121010'          / Observation identification string
OBJECT  = 'IGR_J17062-6143'    / Object name
OBSERVER= 'NATHALIE DEGENAAR'  / PI name
OBS_MODE= 'POINTING'           / POINTING or SLEW or ALL
RA_OBJ  =             256.5678 / [deg] Object Right ascension
DEC_OBJ =             -61.7113 / [deg] Object Declination
RA_PNT  =     256.572997517339 / Pointing RA
DEC_PNT =    -61.7091593122169 / Pointing DEC
RA_NOM  =     256.570539003685 / [deg] Nominal aspect point R.A.
DEC_NOM =    -61.7114498931616 / [deg] Nominal aspect point Dec.
PA_NOM  =     257.156848498856 / [deg] Nominal aspect point roll.
TELAPSE =        149897.765625 / Elapsed time
DATE-OBS= '2025-08-13T20:29:31.234375' / Start date
DATE-END= '2025-08-15T14:07:49' / Stop date
ONTIME  =          126285.1676 / On-source time
EXPOSURE=          126285.1676 / Exposure time
PROCVER = '03.02.014.010'      / Processing script version
MKFFF   = 'ISAS/JAXA'          / Origin of First FITS file
ORIGIN  = 'GSFC/NASA'          / Origin of Processed FITS file
SOFTVER = 'Hea_12Mar2025_V6.35_XRISM_28Feb2025_V002' / Version of HEADAS used
CALDBVER= 'gen20241115_xtd20241115_rsl20241115' / Version of CALDB used
DATE    = '2025-08-30T00:19:45' / Date and time this file was created or updated
SIB2_VER= 'V04.00  '           / SIB2 version JAXA

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